| Community Memorial Hospital Medical Center | Sumner, IA | Critical Access Hospitals | Not rated |
| Community Memorial Hospital, Inc | Hamilton, NY | Critical Access Hospitals | 4 stars |
| Community Regional Medical Center | Fresno, CA | Acute Care Hospitals | 1 star |
| Compass Memorial Healthcare | Marengo, IA | Critical Access Hospitals | 4 stars |
| Concord Hospital | Concord, NH | Acute Care Hospitals | 3 stars |
| Concord Hospital- Franklin | Franklin, NH | Critical Access Hospitals | Not rated |
| Concord Hospital- Laconia | Laconia, NH | Acute Care Hospitals | 3 stars |
| Confluence Health Hospital | Wenatchee, WA | Acute Care Hospitals | 3 stars |
| Connecticut Childrens Medical Center | Hartford, CT | Childrens | Not rated |
| Conway Medical Center | Conway, SC | Acute Care Hospitals | 2 stars |
| Conway Regional Medical Center, Inc | Conway, AR | Acute Care Hospitals | 2 stars |
| Cook Childrens Medical Center | Fort Worth, TX | Childrens | Not rated |
| Cook Childrens Medical Center Prosper | Prosper, TX | Childrens | Not rated |
| Cooley Dickinson Hospital Inc,the | Northampton, MA | Acute Care Hospitals | 2 stars |
| Cooper University Hospital | Camden, NJ | Acute Care Hospitals | 2 stars |
| Cooperman Barnabas Medical Center | Livingston, NJ | Acute Care Hospitals | 3 stars |
| Cooperstown Medical Center | Cooperstown, ND | Critical Access Hospitals | Not rated |
| Copley Hospital | Morrisville, VT | Critical Access Hospitals | 2 stars |
| Copley Memorial Hospital | Aurora, IL | Acute Care Hospitals | 4 stars |
| Copper Queen Community Hospital | Bisbee, AZ | Critical Access Hospitals | Not rated |
| Corewell Health Big Rapids Hospital | Big Rapids, MI | Acute Care Hospitals | 3 stars |
| Corewell Health Gerber Hospital | Fremont, MI | Critical Access Hospitals | 5 stars |
| Corewell Health Ludington Hospital | Ludington, MI | Acute Care Hospitals | 4 stars |
| Corewell Health Reed City Hospital | Reed City, MI | Critical Access Hospitals | Not rated |
| Corewell Health Trenton Hospital | Trenton, MI | Acute Care Hospitals | 3 stars |
| Corewell Health Watervliet Hospital | Watervliet, MI | Acute Care Hospitals | Not rated |
| Corewell Health Wayne Hospital | Wayne, MI | Acute Care Hospitals | 2 stars |
| Corewell Health Zeeland Hospital | Zeeland, MI | Acute Care Hospitals | 5 stars |
| Corning Hospital | Corning, NY | Acute Care Hospitals | 3 stars |
| Coshocton Regional Medical Center | Coshocton, OH | Acute Care Hospitals | 4 stars |
| Coteau Des Prairies Health Care System | Sisseton, SD | Critical Access Hospitals | 4 stars |
| Cottage Hospital | Woodsville, NH | Critical Access Hospitals | 4 stars |
| Covenant Childrens Hospital | Lubbock, TX | Childrens | Not rated |
| Covenant Health Hobbs Hospital | Hobbs, NM | Acute Care Hospitals | 3 stars |
| Covenant Hospital Levelland | Levelland, TX | Acute Care Hospitals | Not rated |
| Covenant Hospital Plainview | Plainview, TX | Acute Care Hospitals | 4 stars |
| Covenant Medical Center | Saginaw, MI | Acute Care Hospitals | 2 stars |
| Covenant Medical Center | Lubbock, TX | Acute Care Hospitals | 3 stars |
| Cox Medical Center Branson | Branson, MO | Acute Care Hospitals | 4 stars |
| Cox Medical Centers | Springfield, MO | Acute Care Hospitals | 3 stars |
| Cox Monett Hospital | Monett, MO | Critical Access Hospitals | 3 stars |
| Crete Area Medical Center | Crete, NE | Critical Access Hospitals | Not rated |
| Crosbyton Clinic Hospital | Crosbyton, TX | Rural Emergency Hospital | Not rated |
| Crossing Rivers Health Medical Center | Prairie du Chien, WI | Critical Access Hospitals | 3 stars |
| Crossridge Community Hospital | Wynne, AR | Critical Access Hospitals | Not rated |
| Crouse Hospital | Syracuse, NY | Acute Care Hospitals | 2 stars |
| Cuba Memorial Hospital, Inc | Cuba, NY | Critical Access Hospitals | Not rated |
| Cumberland Medical Center | Crossville, TN | Acute Care Hospitals | 4 stars |
| Dahl Memorial Healthcare Association Inc | Ekalaka, MT | Critical Access Hospitals | Not rated |
| Danbury Hospital | Danbury, CT | Acute Care Hospitals | 4 stars |